Wiring Fault Isolation

TM 11-7010-201-40-1/ET821-AA-MMI-010/E154 MTS/TO 31S5-2TSQ73-2-1

Table 3-5. MTS Wire List Index

Title

Drawing

Manual number

number

Probe Assembly, Test Set - Wire List; String, and

WL10281447

TM 11-7010-201-40-2

Connector

Test Assembly, Plug-In Unit, Wired, Wire List; String

WL10281449

TM 11-7010-201-40-2

Card Rack Assembly - Digital, RH, Wire List; String,

WL10281451

TM 11-7010-201-40-3

Connector, and Logic

Card Rack Assembly - Test Set, Digital, LH, Wire List;

WL10281452

TM 11-7010-201-40-4

String, Connector, and Logic

Card Rack Assembly - Analog, Wire List; String and

WL10281453

TM 11-7010-201-40-2

Connector

3-8. Wiring Fault Isolation. If a malfunction occurs in the wiring harness, cabling, or circuit card connectors, remove all

circuit cards and disconnect all cable connectors. Use the wire lists to check wiring in the following example:

WARNING

HIGH VOLTAGE is used in the operation of this equipment. DEATH ON CONTACT

may result if personnel fail to observe safety precautions. Learn the areas containing

high voltage in each piece of equipment. Be careful not to contact high voltage

connections when installing or operating this equipment.

Before working inside the equipment, turn power off and ground points of high potential

before touching them.

a. If signal name is unknown, use string list (see figure 3-2) to identify signal. Locate connector and pin number in

the FROM column (J2146, pin 15), then find the signal name under the SIGNAL column (HADAFO) to the right

of connector and pin number.

b. Check continuity between connections indicated under CONNECTOR and PIN headings in FROM column

(J2146, pin 15) and connections indicated under CONNECTOR and PIN headings in TO column (J2109, pin 15).

Check continuity for each listing of signal (HADAFO) in SIGNAL column.

To use the logic list, refer to the connector list example (see figure 3-1) or string list example (see figure 3-2),

and locate in the EQUATION column HAT021E. Proceed to logic list example (see figure 3-3) and locate in the

EQUATION column HAT021E. The FACTOR column identifies the logic factors needed to generate specific

functions.

3-15